Question:
Statement I: Spiral cuticular thickenings of trachea in cockroach are called taenidia.
Statement II: In cockroach, inspiration is a passive process.
Statement I: Spiral cuticular thickenings of trachea in cockroach are called taenidia.
Statement II: In cockroach, inspiration is a passive process.
Statement II: In cockroach, inspiration is a passive process.
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Taenidia are the cuticular thickenings found in the trachea of insects, including cockroaches, providing structural support. In cockroaches, inspiration is passive, unlike in humans where the process is active.
Updated On: Mar 17, 2025
- Both statements I and II are correct
- Both statements I and II are false
- Statement I is correct. But II is false
- Statement I is false. But II is correct
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The Correct Option is A
Solution and Explanation
Step 1: Statement I is correct because in cockroaches, the tracheal tubes are reinforced by spiral cuticular thickenings, which are called taenidia.
Step 2: Statement II is also correct because in cockroaches, inspiration (inhalation of air) is a passive process that occurs due to the contraction and relaxation of body muscles, allowing air to flow in through spiracles.
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